/* ============================================
   河南数安科技有限公司 · 门户网站样式
   白色基底 + 信号红 #f51111 + 科技蓝 #0045ff
   ============================================ */

:root {
  --blue: #0045ff;
  --blue-deep: #0033c4;
  --blue-tint: #e8f2ff;
  --red: #f51111;
  --red-deep: #c90d0d;
  --ink: #111318;
  --ink-2: #4a5160;
  --line: #e6e9f2;
  --bg: #ffffff;
  --bg-tint: #f6f9ff;
  --radius: 16px;
  --font-latin: 'Space Grotesk', sans-serif;
  --font-body: 'Space Grotesk', -apple-system, 'PingFang SC', 'Hiragino Sans GB',
    'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --shadow-soft: 0 4px 24px rgba(17, 19, 24, 0.08);
  --shadow-lift: 0 18px 44px rgba(0, 69, 255, 0.14);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

html, body { overflow-x: clip; }

body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  text-rendering: geometricPrecision;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue); text-decoration: none; transition: color .25s ease; }
a:hover { color: var(--red); }

.container { max-width: 1280px; margin: 0 auto; padding: 0 32px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 30px; border-radius: 999px;
  font-weight: 700; font-size: 15px; letter-spacing: .02em;
  border: 2px solid transparent; cursor: pointer;
  transition: transform .3s cubic-bezier(.2, .8, .2, 1), box-shadow .3s ease,
              background .25s ease, color .25s ease, border-color .25s ease;
}
.btn-lg { padding: 16px 38px; font-size: 16px; }
.btn-primary { background: var(--red); color: #fff; }
.btn-primary:hover { background: var(--blue); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-lift); }
.btn-ghost { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--blue); }
.btn-light:hover { background: var(--blue); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-lift); }

/* ---------- 滚动渐显 ---------- */
.reveal {
  opacity: 0; transform: translateY(28px);
  transition: opacity .7s ease, transform .7s cubic-bezier(.2, .8, .2, 1);
  transition-delay: var(--d, 0ms);
}
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

/* ============ Header ============ */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  padding: 18px 0;
  transition: background .35s ease, box-shadow .35s ease, padding .35s ease;
}
.site-header.is-scrolled {
  background: rgba(255, 255, 255, .82);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--line), 0 8px 30px rgba(17, 19, 24, .06);
  padding: 10px 0;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.brand { display: inline-flex; align-items: center; }
.brand-logo { height: 42px; width: auto; display: block; }

.main-nav { display: flex; align-items: center; gap: 34px; }
.nav-link {
  position: relative; font-size: 15px; font-weight: 600; color: var(--ink);
  padding: 6px 0;
}
.nav-link::after {
  content: ''; position: absolute; left: 0; bottom: 0; height: 2px; width: 100%;
  background: var(--red); transform: scaleX(0); transform-origin: left;
  transition: transform .3s cubic-bezier(.2, .8, .2, 1);
}
.nav-link:hover, .nav-link.is-active { color: var(--blue); }
.nav-link:hover::after, .nav-link.is-active::after { transform: scaleX(1); }
.nav-cta { padding: 10px 24px; }
.nav-mail {
  display: inline-flex; align-items: center; gap: 7px; white-space: nowrap;
  font-size: 14.5px; font-weight: 600; color: var(--ink-2);
  padding: 9px 16px; border: 1px solid var(--line); border-radius: 999px;
  transition: color .25s ease, border-color .25s ease, background .25s ease;
}
.nav-mail svg { width: 16px; height: 16px; }
.nav-mail:hover { color: var(--blue); border-color: var(--blue); background: var(--blue-tint); }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px; background: none; border: 0;
  cursor: pointer; padding: 8px; z-index: 110;
}
.nav-toggle span { width: 26px; height: 2.5px; background: var(--ink); border-radius: 2px; transition: transform .3s ease, opacity .3s ease; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ============ Hero ============ */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  padding: 150px 0 90px; overflow: hidden;
  background:
    radial-gradient(60vw 60vw at 85% -10%, rgba(0, 69, 255, .08), transparent 60%),
    radial-gradient(40vw 40vw at -10% 90%, rgba(245, 17, 17, .05), transparent 60%),
    #fff;
}
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.hero-inner {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center;
}

.hero-kicker {
  display: inline-block; font-size: 14px; font-weight: 700; letter-spacing: .12em;
  color: var(--blue); background: var(--blue-tint);
  padding: 8px 18px; border-radius: 999px; margin-bottom: 28px;
}

.hero-title {
  font-size: clamp(40px, 5.6vw, 74px);
  line-height: 1.14; letter-spacing: -0.01em; font-weight: 800;
  margin-bottom: 28px;
}
.hero-line { display: block; overflow: hidden; }
.hero-word {
  display: inline-block;
  opacity: 0; transform: translateY(110%) ;
  filter: blur(6px);
  transition: opacity .8s ease, transform .8s cubic-bezier(.2, .8, .2, 1), filter .8s ease;
}
.hero-title.is-in .hero-word { opacity: 1; transform: none; filter: none; }
.hero-word:nth-child(2) { transition-delay: .12s; }
.hero-line:nth-child(2) .hero-word:nth-child(1) { transition-delay: .24s; }
.hero-line:nth-child(2) .hero-word:nth-child(2) { transition-delay: .36s; }
.hero-line:nth-child(3) .hero-word:nth-child(1) { transition-delay: .48s; }
.hero-line:nth-child(3) .hero-word:nth-child(2) { transition-delay: .6s; }

.accent-red { color: var(--red); }
.accent-blue { color: var(--blue); }

.hero-lead { max-width: 560px; color: var(--ink-2); margin-bottom: 36px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 56px; }

.hero-stats {
  display: grid; grid-template-columns: repeat(4, auto); gap: 40px;
  border-top: 1px solid var(--line); padding-top: 28px;
}
.stat dt {
  font-family: var(--font-latin); font-size: clamp(28px, 3vw, 40px);
  font-weight: 700; color: var(--blue); line-height: 1.1;
}
.stat dt i { font-style: normal; color: var(--red); }
.stat dd { font-size: 14px; color: var(--ink-2); margin-top: 4px; }

/* Hero 右侧雷达图 */
.hero-visual { position: relative; }
.radar { width: 100%; max-width: 460px; display: block; margin: 0 auto; }
.radar-ring { fill: none; stroke: var(--blue); stroke-opacity: .18; stroke-width: 1.5; }
.radar-axis { stroke: var(--blue); stroke-opacity: .12; stroke-width: 1; }
.radar-sweep {
  fill: url(#sweep); transform-origin: 200px 200px;
  animation: sweep 6s linear infinite;
}
@keyframes sweep { to { transform: rotate(360deg); } }
.radar-dot { fill: var(--red); opacity: 0; animation: blink 3s ease infinite; }
.radar-dot.d2 { animation-delay: 1s; }
.radar-dot.d3 { animation-delay: 2s; }
@keyframes blink { 0%, 70%, 100% { opacity: 0; } 10%, 45% { opacity: 1; } }
.radar-shield { filter: drop-shadow(0 14px 28px rgba(0, 69, 255, .25)); animation: shieldFloat 5s ease-in-out infinite; }
@keyframes shieldFloat { 50% { transform: translateY(-8px); } }

.float-chip {
  position: absolute; display: flex; flex-direction: column; gap: 2px;
  background: rgba(255, 255, 255, .9); backdrop-filter: blur(10px);
  border: 1px solid var(--line); border-radius: 14px;
  padding: 12px 18px; box-shadow: var(--shadow-soft);
  animation: chipFloat 6s ease-in-out infinite;
}
.float-chip strong { font-size: 16px; font-weight: 800; letter-spacing: .06em; color: var(--blue); }
.chip-1 { top: 8%; left: -4%; }
.chip-2 { top: 18%; right: -7%; animation-delay: 1.6s; }
.chip-2 strong { color: var(--red); }
.chip-3 { bottom: 6%; left: 2%; animation-delay: 3.2s; }
.chip-4 { bottom: 12%; right: 1%; animation-delay: 4.4s; }
.chip-4 strong { color: var(--red); }
@keyframes chipFloat { 50% { transform: translateY(-12px); } }

/* ============ 通用 Section ============ */
.section { padding: 110px 0; }
.section-tint { background: var(--bg-tint); }

.section-label {
  font-family: var(--font-latin); font-size: 13px; font-weight: 700;
  letter-spacing: .22em; color: var(--red); margin-bottom: 18px;
}
.section-title {
  font-size: clamp(30px, 3.6vw, 48px); line-height: 1.25;
  letter-spacing: -0.01em; font-weight: 800; margin-bottom: 22px;
}
.section-desc { max-width: 640px; color: var(--ink-2); }
.section-head { margin-bottom: 64px; }

/* 关于我们：左右分栏 */
.split { display: grid; grid-template-columns: .9fr 1.1fr; gap: 72px; align-items: start; }
.split-sticky { position: sticky; top: 110px; }

.industry-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; }
.industry-tags span {
  font-size: 13px; font-weight: 600; color: var(--blue);
  border: 1.5px solid var(--blue-tint); background: #fff;
  padding: 6px 16px; border-radius: 999px;
  transition: all .25s ease;
}
.industry-tags span:hover { background: var(--blue); border-color: var(--blue); color: #fff; transform: translateY(-2px); }

.about-text p { color: var(--ink-2); margin-bottom: 18px; }
.about-text p strong { color: var(--ink); }

.value-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  margin: 36px 0 56px;
}
.value-card {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 26px 22px; background: #fff;
  transition: transform .35s cubic-bezier(.2, .8, .2, 1), box-shadow .35s ease, border-color .35s ease;
}
.value-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lift); border-color: transparent; }
.value-card h3 { font-size: 16px; color: var(--red); margin-bottom: 8px; letter-spacing: .1em; }
.value-card p { font-size: 15px; color: var(--ink); line-height: 1.6; }

/* 发展历程时间线 */
.timeline { list-style: none; position: relative; padding-left: 26px; }
.timeline::before {
  content: ''; position: absolute; left: 5px; top: 6px; bottom: 6px;
  width: 2px; background: linear-gradient(var(--blue), var(--red));
  border-radius: 2px; opacity: .35;
}
.timeline li { position: relative; padding-bottom: 26px; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: ''; position: absolute; left: -26px; top: 9px;
  width: 12px; height: 12px; border-radius: 50%;
  background: #fff; border: 3px solid var(--blue);
  transition: border-color .3s ease, transform .3s ease;
}
.timeline li:hover::before { border-color: var(--red); transform: scale(1.25); }
.timeline time {
  font-family: var(--font-latin); font-weight: 700; font-size: 15px;
  color: var(--blue); display: block; margin-bottom: 4px;
}
.timeline p { font-size: 15px; color: var(--ink-2); }

/* ============ 安全产品 ============ */
.product-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
.product-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 36px 32px;
  transition: transform .35s cubic-bezier(.2, .8, .2, 1), box-shadow .35s ease, border-color .35s ease;
}
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lift); border-color: transparent; }
.product-icon {
  width: 54px; height: 54px; margin-bottom: 22px;
  display: grid; place-items: center;
  color: var(--blue); background: var(--blue-tint); border-radius: 14px;
  transition: background .3s ease, color .3s ease;
}
.product-icon svg { width: 28px; height: 28px; }
.product-card:hover .product-icon { background: var(--red); color: #fff; }
.product-card h3 { font-size: 20px; margin-bottom: 16px; }
.chip-list { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; }
.chip-list li {
  font-size: 13.5px; color: var(--ink-2);
  background: var(--bg-tint); border: 1px solid var(--line);
  padding: 5px 13px; border-radius: 999px;
  transition: all .25s ease;
}
.product-card:hover .chip-list li { border-color: var(--blue-tint); }
.chip-list li:hover { background: var(--blue); color: #fff; border-color: var(--blue); }

.product-card-cta {
  background: var(--blue); border-color: var(--blue); color: #fff;
  display: flex; flex-direction: column; justify-content: center; gap: 14px;
}
.product-card-cta h3 { font-size: 24px; }
.product-card-cta p { font-size: 15px; color: rgba(255, 255, 255, .82); }
.product-card-cta .btn { align-self: flex-start; margin-top: 6px; }
.product-card-cta:hover { transform: translateY(-8px); box-shadow: 0 18px 44px rgba(0, 69, 255, .35); }

/* 合作厂商跑马灯 */
.brand-marquee {
  margin-top: 72px; padding: 26px 0;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  overflow: hidden; background: #fff;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee-track {
  display: flex; align-items: center; gap: 64px; width: max-content;
  animation: marquee 36s linear infinite;
}
.brand-marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span {
  font-family: var(--font-latin); font-size: 19px; font-weight: 700;
  color: var(--ink); opacity: .55; white-space: nowrap;
  transition: opacity .3s ease, color .3s ease;
}
.marquee-track span:hover { opacity: 1; color: var(--blue); }
.marquee-track span::after { content: '·'; margin-left: 64px; color: var(--red); opacity: .8; }
@keyframes marquee { to { transform: translate3d(-50%, 0, 0); } }

/* ============ 安全服务 ============ */
.service-layers { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.service-layer {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 36px 34px; background: #fff; position: relative; overflow: hidden;
  transition: transform .35s cubic-bezier(.2, .8, .2, 1), box-shadow .35s ease;
}
.service-layer::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--blue), var(--red));
  transform: scaleX(0); transform-origin: left;
  transition: transform .45s cubic-bezier(.2, .8, .2, 1);
}
.service-layer:hover { transform: translateY(-6px); box-shadow: var(--shadow-lift); }
.service-layer:hover::before { transform: scaleX(1); }

.layer-badge { display: flex; align-items: baseline; gap: 14px; margin-bottom: 22px; }
.layer-badge b {
  font-family: var(--font-latin); font-size: 40px; font-weight: 700;
  color: transparent; -webkit-text-stroke: 1.5px var(--blue);
  line-height: 1;
}
.layer-badge span { font-size: 20px; font-weight: 800; }
.service-list {
  list-style: none; display: grid; grid-template-columns: 1fr 1fr;
  gap: 10px 18px; margin-bottom: 22px;
}
.service-list li {
  position: relative; padding-left: 18px; font-size: 15px; color: var(--ink-2);
}
.service-list li::before {
  content: ''; position: absolute; left: 0; top: .68em;
  width: 7px; height: 7px; border-radius: 2px;
  background: var(--blue); transform: rotate(45deg);
}
.service-list li:nth-child(even)::before { background: var(--red); }
.layer-delivery {
  font-size: 13.5px; color: var(--blue); font-weight: 600;
  border-top: 1px dashed var(--line); padding-top: 16px;
}

/* MSS 托管服务横幅 */
.mss-band {
  margin-top: 22px; border-radius: 22px; overflow: hidden;
  background: linear-gradient(120deg, #0b1e5b, var(--blue) 60%, #2f6bff);
  color: #fff; padding: 56px 56px;
  display: grid; grid-template-columns: 1.25fr .75fr; gap: 48px; align-items: center;
  position: relative;
}
.mss-band::after {
  content: ''; position: absolute; right: -80px; top: -80px;
  width: 300px; height: 300px; border-radius: 50%;
  border: 60px solid rgba(255, 255, 255, .06);
}
.mss-tag {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .14em;
  background: rgba(255, 255, 255, .14); border: 1px solid rgba(255, 255, 255, .25);
  padding: 6px 16px; border-radius: 999px; margin-bottom: 20px;
}
.mss-main h3 { font-size: clamp(24px, 2.6vw, 34px); line-height: 1.35; margin-bottom: 16px; }
.mss-desc { color: rgba(255, 255, 255, .82); font-size: 15.5px; margin-bottom: 24px; }
.mss-audience { display: flex; flex-wrap: wrap; gap: 10px; }
.mss-audience span {
  font-size: 13.5px; padding: 7px 16px; border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, .35); color: rgba(255, 255, 255, .9);
}
.mss-benefits { list-style: none; display: flex; flex-direction: column; gap: 14px; position: relative; z-index: 1; }
.mss-benefits li {
  background: rgba(255, 255, 255, .1); backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, .2); border-radius: 14px;
  padding: 18px 22px; display: flex; flex-direction: column; gap: 2px;
  transition: transform .3s cubic-bezier(.2, .8, .2, 1), background .3s ease;
}
.mss-benefits li:hover { transform: translateX(8px); background: rgba(255, 255, 255, .18); }
.mss-benefits b { font-size: 16.5px; }
.mss-benefits span { font-size: 13.5px; color: rgba(255, 255, 255, .72); }

/* ============ 核心优势（全幅红） ============ */
.section-red { background: var(--red); color: #fff; }
.section-red .section-label { color: rgba(255, 255, 255, .85); }
.section-red .section-desc { color: rgba(255, 255, 255, .82); }

.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid rgba(255,255,255,.25); }
.adv-item {
  padding: 44px 36px 40px;
  border-bottom: 1px solid rgba(255, 255, 255, .25);
  border-right: 1px solid rgba(255, 255, 255, .25);
  transition: background .35s ease;
}
.adv-item:nth-child(3n) { border-right: 0; }
.adv-item:hover { background: rgba(255, 255, 255, .08); }
.adv-no {
  font-family: var(--font-latin); font-size: 15px; font-weight: 700;
  letter-spacing: .14em; color: rgba(255, 255, 255, .6);
  display: block; margin-bottom: 18px;
  transition: color .3s ease;
}
.adv-item:hover .adv-no { color: #fff; }
.adv-item h3 { font-size: 21px; margin-bottom: 12px; }
.adv-item p { font-size: 15px; color: rgba(255, 255, 255, .82); line-height: 1.75; }

/* ============ CTA ============ */
.cta-band { padding: 90px 0; background: var(--blue-tint); }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta-inner h2 { font-size: clamp(26px, 3vw, 38px); font-weight: 800; margin-bottom: 8px; }
.cta-inner p { color: var(--ink-2); }

/* ============ Footer ============ */
.site-footer { background: var(--blue); color: #fff; padding: 80px 0 0; }
.footer-grid {
  display: grid; grid-template-columns: 1.05fr .55fr 1.15fr .85fr; gap: 44px;
  padding-bottom: 56px; border-bottom: 1px solid rgba(255, 255, 255, .2);
}
.brand-light {
  background: #fff; border-radius: 12px; padding: 10px 18px;
  margin-bottom: 20px; box-shadow: 0 8px 24px rgba(0, 0, 0, .18);
  transition: transform .3s cubic-bezier(.2, .8, .2, 1);
}
.brand-light:hover { transform: translateY(-3px); }
.brand-light .brand-logo { height: 34px; }
.footer-brand p { font-size: 14.5px; color: rgba(255, 255, 255, .75); line-height: 1.9; }

.footer-col h4 {
  font-size: 15px; letter-spacing: .12em; margin-bottom: 20px;
  color: rgba(255, 255, 255, .95);
}
.footer-col a {
  display: block; font-size: 15px; color: rgba(255, 255, 255, .75);
  padding: 5px 0; transition: color .25s ease, transform .25s ease;
}
.footer-col a:hover { color: #fff; transform: translateX(4px); }

.footer-contact p { font-size: 15px; color: rgba(255, 255, 255, .78); padding: 5px 0; line-height: 1.7; }
.footer-contact span {
  display: inline-block; min-width: 74px; margin-right: 12px;
  font-size: 13px; color: rgba(255, 255, 255, .55);
}
.footer-contact a { display: inline; padding: 0; font-weight: 700; }
.footer-contact a:hover { transform: none; }

.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding: 26px 0; font-size: 13.5px; color: rgba(255, 255, 255, .6);
}
.footer-icp { margin: 0 0 0 24px; white-space: nowrap; }
.footer-icp a { color: rgba(255, 255, 255, .6); text-decoration: none; }
.footer-icp a:hover { color: #fff; text-decoration: underline; }
.to-top {
  width: 44px; height: 44px; border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, .4); background: transparent;
  color: #fff; font-size: 18px; cursor: pointer;
  transition: all .3s ease;
}
.to-top:hover { background: #fff; color: var(--blue); transform: translateY(-4px); }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 64px; }
  .hero-visual { max-width: 480px; margin: 0 auto; width: 100%; }
  .split { grid-template-columns: 1fr; gap: 48px; }
  .split-sticky { position: static; }
  .product-grid { grid-template-columns: 1fr 1fr; }
  .mss-band { grid-template-columns: 1fr; padding: 44px 36px; }
  .adv-grid { grid-template-columns: 1fr 1fr; }
  .adv-item:nth-child(3n) { border-right: 1px solid rgba(255,255,255,.25); }
  .adv-item:nth-child(2n) { border-right: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  body { font-size: 16px; }
  .container { padding: 0 22px; }
  .section { padding: 76px 0; }

  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed; inset: 0 0 auto 0; z-index: 105;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; padding: 96px 32px 36px;
    box-shadow: 0 24px 48px rgba(17, 19, 24, .14);
    transform: translateY(-105%); transition: transform .4s cubic-bezier(.2, .8, .2, 1);
  }
  .main-nav.is-open { transform: translateY(0); }
  .nav-link { padding: 15px 0; border-bottom: 1px solid var(--line); font-size: 17px; }
  .nav-cta { margin-top: 22px; }

  .hero { padding: 130px 0 80px; min-height: auto; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .float-chip { display: none; }
  .service-layers { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: 1fr; }
  .adv-item { border-right: 0 !important; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .mss-band { padding: 40px 26px; }
  .service-list { grid-template-columns: 1fr; }
}

/* ============ 重点产品页（products.html） ============ */
.page-hero {
  padding: 170px 0 80px;
  background:
    radial-gradient(50vw 50vw at 90% -10%, rgba(0, 69, 255, .08), transparent 60%),
    radial-gradient(36vw 36vw at -8% 100%, rgba(245, 17, 17, .05), transparent 60%),
    #fff;
}
.ph-stats {
  display: grid; grid-template-columns: repeat(4, auto); gap: 48px;
  border-top: 1px solid var(--line); padding-top: 30px; margin-top: 48px;
}

/* 锚点子导航 */
.subnav {
  position: sticky; top: 68px; z-index: 90;
  background: rgba(255, 255, 255, .85);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.subnav-inner { display: flex; gap: 8px; overflow-x: auto; scrollbar-width: none; }
.subnav-inner::-webkit-scrollbar { display: none; }
.subnav-link {
  flex: none; font-size: 14.5px; font-weight: 600; color: var(--ink-2);
  padding: 15px 18px; position: relative; white-space: nowrap;
}
.subnav-link::after {
  content: ''; position: absolute; left: 18px; right: 18px; bottom: 8px; height: 2.5px;
  background: var(--red); border-radius: 2px;
  transform: scaleX(0); transform-origin: left;
  transition: transform .3s cubic-bezier(.2, .8, .2, 1);
}
.subnav-link:hover { color: var(--blue); }
.subnav-link.is-active { color: var(--blue); }
.subnav-link.is-active::after, .subnav-link:hover::after { transform: scaleX(1); }

/* 产品区块 */
.pblock { padding: 100px 0; }
.pblock-tint { background: var(--bg-tint); }
.pblock-inner {
  display: grid; grid-template-columns: .85fr 1.15fr; gap: 64px; align-items: start;
}
.pblock-flip .pblock-info { order: 2; }
.pblock-flip .pblock-feats { order: 1; }

.pblock-no {
  font-family: var(--font-latin); font-size: 60px; font-weight: 700; line-height: 1;
  color: transparent; -webkit-text-stroke: 1.8px var(--blue); margin-bottom: 18px;
}
.pblock-en {
  font-family: var(--font-latin); font-size: 12.5px; font-weight: 700;
  letter-spacing: .2em; color: var(--red); margin-bottom: 14px; word-break: break-all;
}
.pblock-title {
  font-size: clamp(30px, 3.2vw, 44px); line-height: 1.2;
  font-weight: 800; letter-spacing: -0.01em; margin-bottom: 16px;
}
.pblock-tag {
  display: inline-block; font-size: 14.5px; font-weight: 700; color: var(--blue);
  background: var(--blue-tint); border-radius: 999px; padding: 7px 18px; margin-bottom: 20px;
}
.pblock-desc { color: var(--ink-2); font-size: 16px; margin-bottom: 26px; }
.pblock-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 34px; }
.pblock-tags span {
  font-size: 13px; font-weight: 600; color: var(--ink-2);
  border: 1.5px solid var(--line); background: #fff;
  padding: 6px 16px; border-radius: 999px; transition: all .25s ease;
}
.pblock-tags span:hover { border-color: var(--blue); color: var(--blue); transform: translateY(-2px); }

.pblock-feats { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.pfeat {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 26px;
  transition: transform .35s cubic-bezier(.2, .8, .2, 1), box-shadow .35s ease, border-color .35s ease;
}
.pblock-tint .pfeat { background: #fff; }
.pfeat:hover { transform: translateY(-6px); box-shadow: var(--shadow-lift); border-color: transparent; }
.pfeat h3 {
  font-size: 17px; margin-bottom: 10px; padding-left: 14px; position: relative;
}
.pfeat h3::before {
  content: ''; position: absolute; left: 0; top: .28em; bottom: .28em;
  width: 4px; border-radius: 2px; background: linear-gradient(var(--blue), var(--red));
}
.pfeat p { font-size: 14.5px; color: var(--ink-2); line-height: 1.75; }

/* 首页产品 CTA 卡片双按钮 */
.cta-card-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 6px; }
.btn-light-outline {
  border-color: rgba(255, 255, 255, .55); color: #fff; background: transparent;
}
.btn-light-outline:hover { background: #fff; color: var(--blue); transform: translateY(-2px); }
.cta-card-actions .btn { align-self: auto; }

@media (max-width: 1024px) {
  .pblock-inner { grid-template-columns: 1fr; gap: 44px; }
  .pblock-flip .pblock-info { order: 1; }
  .pblock-flip .pblock-feats { order: 2; }
}

@media (max-width: 768px) {
  .page-hero { padding: 130px 0 60px; }
  .ph-stats { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .subnav { top: 60px; }
  .pblock { padding: 70px 0; }
  .pblock-feats { grid-template-columns: 1fr; }
  .pblock-no { font-size: 46px; }
}

/* ============ 首页 · 产品推荐横栏 ============ */
.feat-strip { padding: 72px 0 76px; background: #fff; border-bottom: 1px solid var(--line); }
.feat-strip-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; margin-bottom: 34px;
}
.feat-more { font-size: 15px; font-weight: 700; white-space: nowrap; }
.feat-more:hover { color: var(--red); }

.feat-row {
  display: grid; grid-template-columns: repeat(6, 1fr);
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  background: #fff;
}
.feat-cell {
  display: flex; flex-direction: column; gap: 6px;
  padding: 28px 22px 26px; color: var(--ink);
  border-right: 1px solid var(--line);
  transition: background .3s ease;
}
.feat-cell:last-child { border-right: 0; }
.feat-cell b {
  font-family: var(--font-latin); font-size: 15px; font-weight: 700;
  color: var(--red); letter-spacing: .08em;
  transition: color .3s ease;
}
.feat-cell strong { font-size: 17px; font-weight: 800; transition: color .3s ease; }
.feat-cell span {
  font-family: var(--font-latin); font-size: 11.5px; letter-spacing: .06em;
  color: var(--ink-2); transition: color .3s ease;
}
.feat-cell:hover { background: var(--blue); }
.feat-cell:hover b, .feat-cell:hover strong, .feat-cell:hover span { color: #fff; }

@media (max-width: 1024px) {
  .feat-row { grid-template-columns: repeat(3, 1fr); }
  .feat-cell:nth-child(3n) { border-right: 0; }
  .feat-cell:nth-child(-n+3) { border-bottom: 1px solid var(--line); }
}

@media (max-width: 768px) {
  .feat-strip { padding: 52px 0 56px; }
  .feat-row {
    display: flex; overflow-x: auto; scroll-snap-type: x mandatory;
    border-radius: 14px; scrollbar-width: none;
  }
  .feat-row::-webkit-scrollbar { display: none; }
  .feat-cell {
    flex: 0 0 62%; scroll-snap-align: start;
    border-right: 1px solid var(--line); border-bottom: 0 !important;
  }
}

/* 双方案横栏 */
.feat-row-duo { grid-template-columns: repeat(2, 1fr); }
.feat-cell-duo { padding: 36px 32px 32px; gap: 8px; }
.feat-cell-duo strong { font-size: 21px; }
.feat-cell-duo span { font-size: 13px; }
.feat-cell p {
  margin: 8px 0 0; font-size: 14px; line-height: 1.75; color: var(--ink-2);
  transition: color .3s ease;
}
.feat-cell:hover p { color: rgba(255, 255, 255, .88); }
@media (max-width: 1024px) {
  .feat-row-duo { grid-template-columns: repeat(2, 1fr); }
  .feat-row-duo .feat-cell:nth-child(3n) { border-right: 1px solid var(--line); }
  .feat-row-duo .feat-cell:nth-child(-n+3) { border-bottom: 0; }
  .feat-row-duo .feat-cell:first-child { border-right: 1px solid var(--line); }
}
@media (max-width: 768px) {
  .feat-row-duo { display: grid; grid-template-columns: 1fr; overflow: visible; }
  .feat-row-duo .feat-cell { flex: none; border-right: 0; border-bottom: 1px solid var(--line); scroll-snap-align: none; }
  .feat-row-duo .feat-cell:last-child { border-bottom: 0; }
}
/* 页脚 - 公众号二维码 */
.footer-follow { display: flex; flex-direction: column; }
.qr-card {
  margin: 0 0 14px; display: flex; align-items: center; gap: 14px;
  background: #fff; border-radius: 14px; padding: 13px 16px;
  transition: transform .3s ease, box-shadow .3s ease;
}
.qr-card:last-child { margin-bottom: 0; }
.qr-card:hover { transform: translateY(-3px); box-shadow: 0 14px 30px rgba(0, 0, 0, .22); }
.qr-card img { width: 64px; height: 64px; border-radius: 8px; display: block; }
.qr-card figcaption strong { display: block; font-size: 15px; font-weight: 800; color: var(--ink); margin-bottom: 3px; }
.qr-card figcaption span { font-size: 12px; color: var(--ink-2); }
@media (max-width: 768px) {
  .footer-bottom { flex-wrap: wrap; gap: 8px 16px; }
  .footer-icp { margin: 0; width: 100%; order: 3; }
}